However, when performing a port scan I am seeing 53, 110, 143 open.
I have not seen any error messages.
I am avoiding configuring a firewall separately because I do not want to interfere with ISPConfig.
Does anyone have any hints?

Is there another way to ensure that users can only use SSL to connect to email services?

/sbin/bastille-ipchains: line 232: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 234: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 236: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 238: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 240: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 242: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 251: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 252: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 258: /sbin/ipchains: No such file or directory
Setting up IP spoofing protection... done.
Allowing traffic from trusted interfaces.../sbin/bastille-ipchains: line 283: /sbin/ipchains: No such file or directory
done.
/sbin/bastille-ipchains: line 297: /sbin/ipchains: No such file or directory
Setting up chains for public/internal interface traffic.../sbin/bastille-ipchains: line 340: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 342: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 345: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 347: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 351: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 353: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 356: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 358: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 380: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 381: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 380: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 381: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 380: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 381: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 380: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 381: /sbin/ipchains: No such file or directory
done.
Setting up general rules.../sbin/bastille-ipchains: line 437: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 437: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 445: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 446: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 463: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 463: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 463: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 463: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 468: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 468: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 468: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 468: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 468: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 473: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 491: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 504: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 508: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 508: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 508: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 491: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 504: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 508: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 508: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 508: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 537: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 537: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 537: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 537: /sbin/ipchains: No such file or directory
done.
Setting up outbound rules.../sbin/bastille-ipchains: line 570: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 570: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 584: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 590: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 591: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 596: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 596: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 600: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 600: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 604: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 604: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 604: /sbin/ipchains: No such file or directory
/sbin/bastille-ipchains: line 604: /sbin/ipchains: No such file or directory
done.

I am not sure how a correct setup needs to look like, but here are a few queries that I expect you would want to run:

# find / | grep ipchains

Code:

/usr/share/Bastille/bastille-ipchains
/sbin/bastille-ipchains

Looking at the /sbin/bastille-ipchains file, it seems the errors are caused by an incorrect definition of the symbol '${IPCHAINS}'. The error lines seem to be using that symbol. E.g., line 232:

This worked, thank you very much.
A post scan now shows only the expected open ports.
However, I see this error message when doing "# /etc/init.d/bastille-firewall restart". Is this a reason for concern?

This worked, thank you very much.
A post scan now shows only the expected open ports.
However, I see this error message when doing "# /etc/init.d/bastille-firewall restart". Is this a reason for concern?